Investigation of Phase Equilibria in the System Nd2O3–Na2O–P2O5. Quasibinary Section NdPO4–Na3PO4

• Autorzy: Znamierowska T. , Bandrowski Sz.
• Języki publikacji: EN

Abstrakty

EN

Quasibinary section NdPO4–Na3PO4 has been investigated by thermoanalytical methods (DTA, TG, DTG), X-ray powder diffraction and microscopy. Its phase diagram is proposed. It is found, that the parent orthophosphates react in the molar ratio 1:1 yielding an intermediate compound of Na3Nd(PO4)2. This phosphate melts incongruently at 1485C, giving NdPO4 and an Na3PO4-rich liquid. Na3Nd(PO4)2 compound is stable down to room temperature and exhibits a polymorphic transition at about 1040 graduate C.

Słowa kluczowe

EN

phase diagram; DTA; TG; DTG; X-ray powder diffraction; neodymium-sodium orthophosphate

• Wydawca: Polskie Towarzystwo Chemiczne
• Czasopismo: Polish Journal of Chemistry
• Rocznik: 2006
• Tom: Vol. 80, nr 10
• Strony: 1731--1735
• Opis fizyczny: Bibliogr. 13 poz., rys.

Twórcy

autor

Znamierowska T.

autor

Bandrowski Sz.

• Department of Inorganic Chemistry, Faculty of Engineering and Economics, Wrocław University of Economics, Komandorska 118/120, PL 53-345 Wrocław, Poland

Bibliografia

• 1. Znamierowska T. and Bandrowski Sz., Polish J. Chem., 77, 1131 (2003).
• 2. Znamierowska T. and Bandrowski Sz., Polish J. Chem., 78, 771 (2004).
• 3. Hangmin Guan and Youjin Zhang, J. Solid State Chem., 177, 781 (2004).
• 4. Turkdogan C.T. and Maddocks W.R., J. Iron Steel Inst. (London), 172, 6 (1952).
• 5. Osterheld R.K. and Bahr E.W., J. Inorg. Nucl. Chem., 32, 2539 (1970).
• 6. Levina M.E. and Volodina A.W., Vestnik Moskov. Univ. Ser II, 22,149 (1967) (in Russian).
• 7. Bergman A.G. and Shanzharova A.I., Zh. Neorg. Khim., 15, 1708 (1970).
• 8. Palazzi M. and Remy F., Bull. Soc. Chim. Fr., 8,2758 (1971).
• 9. Majling J., Proceedings of the Conference on Refractory Materials, High Tatras, Czechoslovakia, 1970.
• 10.Kloss M., Finke B., Schwarz L. and Haberland D., J. Luminescence, 72-74, 684 (1997).
• 11.Kizilyalli M. and Welch A.J.E., Rare Earths Mod. Sci. Technol., l, 209 (1977).
• 12.Salmon R., Parent C., Ylasse M. and Le Flem G., Mat. Res. Bull., 13,439 (1978).
• 13.Znamierowska T. and Mizer D., Polish J. Chem., 78, 195 (2004).